Hand writing on a blackboard in a SEM class with some icons and concepts drawn on it. Some books and school materials.

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Size: 6016px × 4000px
Location: Barcelona, Spain
Photo credit: © Juan Diego Oliva Plaza / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: blackboard, board, books, business, caucasian, chalk, chalkboard, class, classroom, education, engine, hand, instruction, learn, learning, lesson, market, marketing, notebook, online, optimization, pen, person, pupil, qualification, search, sem, student, study, teacher, teaching, technology, training, write